mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 03:02:36 +01:00
50947152c2
Summary of changes: - added description of MTBUF instructions and format modifier; - described limitations of f16 inline constants when used with integer operands; - updated description of gfx9+ flat global addressing modes; - v_accvgpr_write_b32 src0 corrections (gfx908); - minor bugfixing and improvements.
65 lines
2.9 KiB
ReStructuredText
65 lines
2.9 KiB
ReStructuredText
..
|
|
**************************************************
|
|
* *
|
|
* Automatically generated file, do not edit! *
|
|
* *
|
|
**************************************************
|
|
|
|
.. _amdgpu_synid7_waitcnt:
|
|
|
|
waitcnt
|
|
===========================
|
|
|
|
Counts of outstanding instructions to wait for.
|
|
|
|
The bits of this operand have the following meaning:
|
|
|
|
===== ================================================ ============
|
|
Bits Description Value Range
|
|
===== ================================================ ============
|
|
3:0 VM_CNT: vector memory operations count. 0..15
|
|
6:4 EXP_CNT: export count. 0..7
|
|
12:8 LGKM_CNT: LDS, GDS, Constant and Message count. 0..31
|
|
===== ================================================ ============
|
|
|
|
This operand may be specified as one of the following:
|
|
|
|
* An :ref:`integer_number<amdgpu_synid_integer_number>` or an :ref:`absolute_expression<amdgpu_synid_absolute_expression>`. The value must be in the range 0..0xFFFF.
|
|
* A combination of *vmcnt*, *expcnt*, *lgkmcnt* and other values described below.
|
|
|
|
====================== ======================================================================
|
|
Syntax Description
|
|
====================== ======================================================================
|
|
vmcnt(<*N*>) A VM_CNT value. *N* must not exceed the largest VM_CNT value.
|
|
expcnt(<*N*>) An EXP_CNT value. *N* must not exceed the largest EXP_CNT value.
|
|
lgkmcnt(<*N*>) An LGKM_CNT value. *N* must not exceed the largest LGKM_CNT value.
|
|
vmcnt_sat(<*N*>) A VM_CNT value computed as min(*N*, the largest VM_CNT value).
|
|
expcnt_sat(<*N*>) An EXP_CNT value computed as min(*N*, the largest EXP_CNT value).
|
|
lgkmcnt_sat(<*N*>) An LGKM_CNT value computed as min(*N*, the largest LGKM_CNT value).
|
|
====================== ======================================================================
|
|
|
|
These values may be specified in any order. Spaces, ampersands and commas may be used as optional separators.
|
|
|
|
*N* is either an
|
|
:ref:`integer number<amdgpu_synid_integer_number>` or an
|
|
:ref:`absolute expression<amdgpu_synid_absolute_expression>`.
|
|
|
|
Examples:
|
|
|
|
.. parsed-literal::
|
|
|
|
vm_cnt = 1
|
|
exp_cnt = 2
|
|
lgkm_cnt = 3
|
|
cnt = vm_cnt | (exp_cnt << 4) | (lgkm_cnt << 8)
|
|
|
|
s_waitcnt cnt
|
|
s_waitcnt 1 | (2 << 4) | (3 << 8) // the same as above
|
|
s_waitcnt vmcnt(1) expcnt(2) lgkmcnt(3) // the same as above
|
|
s_waitcnt vmcnt(vm_cnt) expcnt(exp_cnt) lgkmcnt(lgkm_cnt) // the same as above
|
|
|
|
s_waitcnt vmcnt(1)
|
|
s_waitcnt expcnt(2) lgkmcnt(3)
|
|
s_waitcnt vmcnt(1), expcnt(2), lgkmcnt(3)
|
|
s_waitcnt vmcnt(1) & lgkmcnt_sat(100) & expcnt(2)
|